What color is #559DCE?

#559DCE is a medium cyan-blue. In RGB it is rgb(85, 157, 206), and in HSL hsl(204, 55%, 57%).

Is #559DCE accessible as text?

On white, #559DCE has a contrast ratio of 2.96:1 (fails WCAG AA for body text); on black it is 7.10:1 (passes). For text placed on #559DCE, use black for the best readability.

What is the closest Tailwind color to #559DCE?

The nearest Tailwind CSS token is sky-500 (#00A6F4).

What colors go well with #559DCE?

#559DCE pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #CE8555. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #559DCE below.

Is #559DCE good for buttons?

#559DCE works well for buttons and highlights, but use black text on #559DCE — white text only reaches 2.96:1, below the 4.5:1 needed for normal-size labels.

Is #559DCE the same as CSS cornflowerblue?

No — #559DCE is not the CSS named color cornflowerblue, but cornflowerblue (#6495ED) is the closest CSS named color.

#559DCE Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #559DCE

Not just a swatch — here's how #559DCE works with other colors. Named schemes with #559DCE in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #559DCE Accent #A5C4C0 Surface #DEDABF Secondary #9AA0A0 Anchor #1F344A

Carolina Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Nordic Calm Accent · 5 colors

Accent #559DCE Secondary #AEB4B8 Surface #F1F2F0 Support #7C93A6 Anchor #2E3236

Carolina Blue keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.

Tech Product Signal · 5 colors

Signal #559DCE Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #82C3F0

Carolina Blue is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Carolina Blue.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #559DCE Secondary #ADC4D6 Support #969386 Ink #16140F

Carolina Blue is the single accent in this high-contrast editorial system — set on near-white paper against near-black ink, with a warm grey and a desaturated tint of Carolina Blue carrying the quiet middle.

Modern Café Dominant · 5 colors

Dominant #559DCE Anchor #3C2925 Surface #EAE5D0 Accent #7B9E77 Secondary #393933

Carolina Blue anchors this café scheme as the warm mid-tone, lifted by latte cream and a muted sage accent and grounded by espresso brown and a warm charcoal.

Build a working theme in the generator →

Color Lab

How #559DCE actually behaves in design work — read from its OKLCH lightness, chroma and hue, not just its raw numbers. Ten signals to help you decide where this color earns its place.

Warmth 20/100

Cool

Reads cool and recessive — calming, technical, good for trust-led UI.

Softness 55/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 33/100

Low

Mid depth — usable as an accent or a muted ground.

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 46/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 41/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 40/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 67/100

High

Strong interactive accent — visible and can carry a legible label.

Surface fit 37/100

Low

Usable as a tinted surface in measured doses.

Print safety 75/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #559DCE

For UI

For branding

For interior

For fashion

People also use #559DCE with

Turquoise Slate Blue Peru Platinum Charcoal

UI roles & guardrails

Primary action Safe as a filled button with near-black label. AA

Body text Do not use for body copy on light surfaces. Avoid

Large display Only on dark surfaces. Avoid

Background Pair with #141310 text at 6.3:1. Use

Subtle surface Use #E0EBF2 for cards and hover fills. Tint 80

Avoid beside #5575CE — the hue gap is too small to read as intentional. Clash

In real applications

Not a swatch to memorise — a color to build with. Here is #559DCE at work across the surfaces designers actually ship.

Website / UI

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Dashboard

Revenue

$48.2k ▲ 12%

Brand

AVELINE

Studio

Poster

Nov 14 · 8PM

NIGHT
MARKET

Packaging

BLOOM

Botanical Wash

250 ml

Interior

Every model

Export

:root {
  --color-base: #559DCE;
  --color-base-rgb: 85 157 206;
  --color-base-oklch: oklch(66.9% 0.103 240.4);
  --color-50: #F3F8FC;
  --color-100: #DFEDF6;
  --color-200: #C0DBED;
  --color-300: #94BFDB;
  --color-400: #6BA2C7;
  --color-500: #4A84AB;
  --color-600: #3F6883;
  --color-700: #314C5E;
  --color-800: #23333E;
  --color-900: #172026;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  carolina-blue: {
    50: '#F3F8FC',
    100: '#DFEDF6',
    200: '#C0DBED',
    300: '#94BFDB',
    400: '#6BA2C7',
    500: '#4A84AB',
    600: '#3F6883',
    700: '#314C5E',
    800: '#23333E',
    900: '#172026',
  },
}

$base: #559DCE;
$base-ink: #141310;
$base-50: #F3F8FC;
$base-100: #DFEDF6;
$base-200: #C0DBED;
$base-300: #94BFDB;
$base-400: #6BA2C7;
$base-500: #4A84AB;
$base-600: #3F6883;
$base-700: #314C5E;
$base-800: #23333E;
$base-900: #172026;
$base-hover: #3481B4;
$base-subtle: #D0E1EC;

{
    "color": {
        "base": {
            "value": "#559DCE",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F8FC",
                "type": "color"
            },
            "100": {
                "value": "#DFEDF6",
                "type": "color"
            },
            "200": {
                "value": "#C0DBED",
                "type": "color"
            },
            "300": {
                "value": "#94BFDB",
                "type": "color"
            },
            "400": {
                "value": "#6BA2C7",
                "type": "color"
            },
            "500": {
                "value": "#4A84AB",
                "type": "color"
            },
            "600": {
                "value": "#3F6883",
                "type": "color"
            },
            "700": {
                "value": "#314C5E",
                "type": "color"
            },
            "800": {
                "value": "#23333E",
                "type": "color"
            },
            "900": {
                "value": "#172026",
                "type": "color"
            }
        }
    }
}

Palettes built on #559DCE

Color Lab

Pairs with #559DCE

UI roles & guardrails

In real applications

Scales

Every model

Export